Debris is scattered across the back yard of a home owned by Nichole Tomlin after a tornado in Granbury, Texas. Nichole Tomlin, AP

Pete Alaniz salvages personal items from his tornado-damaged home on May 16 in Cleburne, Texas. His family hid in a closet when the tornado tore through the small community. Michael Ainsworth, The Dallas Morning News, via AP

Derrek Grisham points out damage to storm chaser Travis Schafer after a tornado wrecked his mother's home on Hyde Park Lane at Country Club Road on May 15 in Cleburne, Texas. Tom Fox, The Dallas Morning News, via AP

Debris from destroyed structures litter the street on Hyde Park Lane at Country Club Road in Cleburne, Texas. Tom Fox, The Dallas Morning News, via AP

Video captured by WFAA-TV shows the devastation in Hood County from multiple twisters that touched down west of Dallas-Fort Worth. WFAA.com

Johnny Ortiz, left, and James South carry Miguel Morales to an ambulance after a tornado struck Granbury, Texas. Mike Fuentes, AP

A tractor-trailer was tossed onto a parked car at a home on Lindsey Lane in Cleburne, Texas. Tom Fox, The Dallas Morning News, via AP

An injured person is moved to an ambulance in Granbury. Mike Fuentes, AP